30 Eylül 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/274673</identifier>
  <creators>
    <creator>
      <creatorName>CERN İşbirliği</creatorName>
      <affiliation>CERN</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Improved Measurement Of The Semileptonic Decay ${D}_{S}^{+}\To {K}^{0}{E}^{+}{\Nu }_{E}$</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2024</publicationYear>
  <dates>
    <date dateType="Issued">2024-09-30</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/274673</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1103/PhysRevD.110.052012</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Analyzing ${e}^{+}{e}^{-}$ collision data corresponding to an integrated luminosity of $7.33\text{}\text{}{\mathrm{fb}}^{-1}$ collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we measure the branching fraction of the semileptonic decay ${D}_{s}^{+}\to {K}^{0}{e}^{+}{\nu }_{e}$ to be $\left(2.98±0.2{3}_{\mathrm{stat}}±0.1{2}_{\mathrm{syst}}\right)×{10}^{-3}$. Based on fit to the partial decay rates in various ${q}^{2}$ intervals, the product value of ${D}_{s}^{+}\to {K}^{0}$ hadronic form factor and Cabibbo-Kobayashi-Maskawa element is measured to be ${f}_{+}^{{K}^{0}}\left(0\right)|{V}_{cd}|=0.143±0.01{1}_{\mathrm{stat}}±0.00{3}_{\mathrm{syst}}$. With $|{V}_{cd}|=0.22486±0.00067$ as an input, the hadronic form factor is evaluated to be ${f}_{+}^{{K}^{0}}\left(0\right)=0.636±0.04{9}_{\mathrm{stat}}±0.01{3}_{\mathrm{syst}}$. The branching fraction and form factor measurements are factors of 1.6 and 1.7 more precise than the previous world averages, respectively.&lt;/p&gt;</description>
  </descriptions>
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